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  <title>将迭代器中的元素拷贝到数组</title>
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  <div id="layout-content"><div id="function.iterator-to-array" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">iterator_to_array</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.1.0, PHP 7)</p><p class="refpurpose"><span class="refname">iterator_to_array</span> &mdash; <span class="dc-title">将迭代器中的元素拷贝到数组</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.iterator-to-array-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>iterator_to_array</strong></span>
    ( <span class="methodparam"><span class="type"><a href="class.traversable.html" class="type Traversable">Traversable</a></span> <code class="parameter">$iterator</code></span>
   [, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$use_keys</code><span class="initializer"> = true</span></span>
  ] ) : <span class="type">array</span></div>

  <p class="para rdfs-comment">
   将迭代器中的元素拷贝到数组。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.iterator-to-array-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">iterator</code></dt>

     <dd>

      <p class="para">
       被拷贝的迭代器。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">use_keys</code></dt>

     <dd>

      <p class="para">
       是否使用迭代器元素键作为索引。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.iterator-to-array-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   一个数组，包含迭代器中的元素。
  </p>
 </div>



 <div class="refsect1 changelog" id="refsect1-function.iterator-to-array-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>5.2.1</td>
       <td>
        添加了 <code class="parameter">use_keys</code> 参数。
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.iterator-to-array-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="regexiterator.getmode.example.basic">
    <p><strong>Example #1 <span class="function"><strong>iterator_to_array()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$iterator&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">ArrayIterator</span><span style="color: #007700">(array(</span><span style="color: #DD0000">'recipe'</span><span style="color: #007700">=&gt;</span><span style="color: #DD0000">'pancakes'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'egg'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'milk'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'flour'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">iterator_to_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$iterator</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">iterator_to_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$iterator</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">false</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
array(4) {
  [&quot;recipe&quot;]=&gt;
  string(8) &quot;pancakes&quot;
  [0]=&gt;
  string(3) &quot;egg&quot;
  [1]=&gt;
  string(4) &quot;milk&quot;
  [2]=&gt;
  string(5) &quot;flour&quot;
}
array(4) {
  [0]=&gt;
  string(8) &quot;pancakes&quot;
  [1]=&gt;
  string(3) &quot;egg&quot;
  [2]=&gt;
  string(4) &quot;milk&quot;
  [3]=&gt;
  string(5) &quot;flour&quot;
}
</pre></div> 
    </div>
   </div>
  </p>
 </div>


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